Tracer WH-D4D263613D3i-PL Compatible with Disc Brake Front Wheel: 26&';&'; x 3&';&'; x 13G Aluminum Double Polish Fat Rim, Polished Spokes. Axle: 3/8&';&';x 13G x 36H x 135 x 175mm Rear Wheel: 26&';&'; x 4&';&'; x 13G Aluminum Double Polish Fat Rim, Polished Spokes. Sturmey Archer SX-RK3 Internal 3 Speed 22T Freewheels for Disc Brake. Axle: 3/8&';&';x 13G x 36H x 135 x 215mm Item included: Front Wheel, Rear Wheel, Shifter, etc. (Shown in the picture)